CN106153681A - Quality of steam diagnosis meter - Google Patents
Quality of steam diagnosis meter Download PDFInfo
- Publication number
- CN106153681A CN106153681A CN201510202068.2A CN201510202068A CN106153681A CN 106153681 A CN106153681 A CN 106153681A CN 201510202068 A CN201510202068 A CN 201510202068A CN 106153681 A CN106153681 A CN 106153681A
- Authority
- CN
- China
- Prior art keywords
- steam
- quality
- bar
- pipeline
- annular flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
- F22B35/16—Control systems for steam boilers for steam boilers of forced-flow type responsive to the percentage of steam in the mixture of steam and water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/38—Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/58—Investigating or analyzing materials by the use of thermal means by investigating moisture content by measuring changes of properties of the material due to heat, cold or expansion
- G01N25/60—Investigating or analyzing materials by the use of thermal means by investigating moisture content by measuring changes of properties of the material due to heat, cold or expansion for determining the wetness of steam
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/226—Construction of measuring vessels; Electrodes therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Measuring Volume Flow (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A kind of quality of steam meter, including the pipeline with entrance and exit.Bar positions in the duct between entrance and exit.Bar limits the annular flow path between outer wall and the inwall of pipeline of bar.Mixing arrangement positions in the duct between entrance and the upstream end thereof of bar.Spaced apart sensor is positioned in annular flow path.Each sensor is structured to the electric capacity for sensing the steam flowing through annular flow path and/or impedance.
Description
Technical field
This invention relates generally to quality of steam meter, and especially, relate to having for sensing
The quality of steam meter of the electrode of electric capacity and/or impedance.
Background technology
In process industrial, steam is generally used for heating purpose, and in oil and natural gas work
Industry is used for reclaiming Hydrocarbon as injection fluid.Such as these steam flow application profit
With saturated vapor, saturated vapor can be steam entirely, is liquid entirely, or steam and the knot of liquid
Close.Thermodynamic relation uses quality of steam to calculate the character of saturated vapor, such as density and matter
Amount flow rate and enthalpy flow rate.These thermodynamic relations assume that saturated vapor is in saturation pressure and temperature
Under the liquid phase that coexists and the uniform homogeneous blend of vapour phase, but it practice, saturated vapor is the completeest
Full mixing.Therefore, the device of such as Venturi tube is used for fluid-mixing such that it is able to assume homogenizing.
Thermodynamic relation is it is also supposed that known quality of steam.Usually assume that the steam matter of 1.0 or 100%
Amount performs density and mass flowrate calculates.But, for from 0.9 to 1.0 quality of steam,
Quality of steam often reduces 1%, then the density increase substantially 1% of homogenizing steam.Along with steam matter
Amount reduces further, and the increase of the minimizing of every for quality the 1% of density becomes much larger.Thus,
When calculating mass flowrate, it is assumed that incorrect quality of steam may cause great error.
Under the pressure of regulation, the temperature of vapour mixture keeps constant under saturation temperature, directly
Become liquid to all of steam or all of liquid becomes steam.Therefore can not be only by measuring
Temperature and pressure determines quality of steam.As a result, quality of steam meter use the most optical, electrical appearance,
The means of impedance or other method are to determine quality of steam.The electric capacity of vapour mixture is along with mixed
The percentage ratio of aqueous water in compound and change.The water when flowing through the pipe section of level along with steam
Drip and be evenly suspended under the hypothesis in steam, determine the quality of mixture.For realizing water
Drip is uniformly distributed, and uses mixing arrangement (such as Venturi tube, nozzle, perforated plate, vortex dress
Put or other this element).But, water droplet can be deposited on jet chimney unevenly
At Di Bu, or along with vapour mixture by water droplet during pipeline towards the downstream end of pipeline.Currently
Quality of steam meter be not resulted in the deposition of water droplet.
Summary of the invention
Quality of steam meter includes the pipeline with entrance and exit.Bar location be positioned in the duct into
Between mouth and outlet.Bar limits the annular flow path between outer wall and the inwall of pipeline of bar.
Mixing arrangement positions in the duct between entrance and the upstream end thereof of bar.Spaced apart sensing
Device is positioned in annular flow path.Each sensor is structured to flow through ring-type for sensing
The electric capacity of the steam of flow passage and/or impedance.
The method measuring quality of steam includes that steam is led into pipeline by the entrance by pipeline
In, homogenize steam, and makes steam flow through annular flow to be routed to the outlet of pipeline.The party
The position sensing that method further includes in annular flow path flows through annular flow path
The electric capacity of steam and/or impedance, and feel based on each position in annular flow path
The electric capacity measured and/or impedance produce the quality of steam value of the steam flowing through annular flow path.
Accompanying drawing explanation
Fig. 1 is the partial side of the quality of steam meter of electrode and bottom electrode on having on interior bar
Face sectional view, and the schematic diagram of the electronic building brick being associated for signal processing.
Fig. 2 A is the quality of steam meter sectional view along part 2-2 in Fig. 1 of Fig. 1.
Fig. 2 B is that the alternate embodiment of the quality of steam meter of Fig. 1 is along the part in Fig. 1
The sectional view of 2-2.
Fig. 2 C is that the alternate embodiment of the quality of steam meter of Fig. 1 is along the part in Fig. 1
The sectional view of 2-2.
Fig. 2 D is that the alternate embodiment of the quality of steam meter of Fig. 1 is along the part in Fig. 1
The sectional view of 2-2.
Fig. 3 is the local of the quality of steam meter on interior bar with longitudinally spaced electrode of Fig. 1
Side cross-sectional views.
Fig. 4 is the steam matter on interior bar with longitudinally spaced upper electrode and bottom electrode of Fig. 1
The partial side sectional view of gauge.
Detailed description of the invention
Generally speaking, the present invention is to have the quality of steam meter of diagnosis capability.Quality of steam meter has
There are the multiple electrodes on bar of the annular flow path inner position in the duct.Electrode includes sensing
Structure, this sensing structure allows quality of steam meter based on flowing through in pipeline with being suspended in main level
Annular flow path vapour phase in the dielectric properties of water droplet, measure quality of steam.Multiple
Electrode is placed along the bar positioned concentrically in the duct, to allow the axis along flowing
Multiple electric capacity and/or impedance measurements.These measured values are used for detecting and verifying fluid mixture
Along annular flow path Uniform dielectric performance it is assumed that and therefore improve quality of steam survey
The credibility of value and reliability.
Fig. 1 is the partial side sectional view of the quality of steam meter 10 according to an embodiment.Figure
2A is the sectional view along the line 2-2 in Fig. 1.As shown in Fig. 1 and 2 A, quality of steam
Meter 10 includes having entrance 14 and pipeline 12, mixing arrangement 18 and the bar 20 of outlet 16.
Mixing arrangement 18 and bar 20 are positioned in pipeline 12 concentrically.Mixing arrangement 18 is permissible
It is Venturi tube, nozzle, perforated plate, vortex device or other suitable mixing arrangement any.Pipe
Road 12 includes inwall 22.In the illustrated embodiment, pipeline 12 is electrode and can be
Any conductive material of such as carbon steel.Bar 20 includes the outer wall 26 with bar electrode 28 and 30.
In the illustrated embodiment, bar 20 can be any insulant of such as pottery, and bar
Electrode 28 and 30 can be such as carbon steel or stainless any conductive material.Bar electrode 28
Separated by gap 32 with 30.In the illustrated embodiment, outside bar electrode 28 and 30 is attached to
Wall 26, and gap 32 represents that the electricity of outer wall 26 exposed separates bar electrode 28 and 30
Part.This arrangement creates two sensors, or ganged condenser, a sensor is by pipeline
12 and bar electrode 28 is formed and another sensor is formed by pipeline 12 and bar electrode 30.?
In alternate embodiment, gap 32 can be filled with the insulant of such as ceramic material.
Space between bar 20 and pipeline 12 creates annular flow path 34.
In the present embodiment, pipeline 12 and bar electrode 28 and 30 are connected to electronics by electric wire 36
Assembly 38.Electric wire 36 includes the electric wire for each bar electrode 28 and 30, and is used for managing
The electric wire in road 12.Electronic building brick 38 can include signal processor 40, digital processing unit 42,
Local operator interface 46, memorizer 44 and communication interface 48.Communication interface 48 can be by
It is connected to monitoring/control system 50.Quality of steam meter 10 can carry to monitoring/control system 50
Export for quality of steam measured value.The capacitor formed by pipeline 12 and bar electrode 28 and 30
Produce the signal of telecommunication, described be transferred to signal processor 40 by electric wire 36.The signal of telecommunication is transferred to
Digital processing unit 42, at digital processing unit 42, signal is stored in memorizer 44 also
And may be displayed at local operator interface 46.Then signal can be transferred to communication and connect
Mouth 48 and monitoring/control system 50.In alternative embodiments, electronic building brick 38 is permissible
It is telemetry system or Supervised Control and data acquisition (SCADA) system.In another interchangeable reality
Executing in example, quality of steam meter 10 can be the unit dress via local operator interface 46 monitoring
Put.
For measuring quality of steam, vapour mixture is by entrance 14 and by mixing arrangement 18
In flowing into pipeline 12.The liquid portion of fluid is atomized into less, uniformly by mixing arrangement 18
Droplet to produce uniform homogeneous blend.Uniform homogeneous blend leaves mixing arrangement 18 and enters ring
In shape flow passage 34.Mixture is by exporting 16 exit conduits 12.Work as vapour mixture
When flowing through annular flow path 34, it is formed between bar electrode 28 and 30 and pipeline 12
Sensor determine the dielectric properties of mixture by measuring electric capacity and/or impedance.Upper boom electricity
Pole 28 and the plate each functioning as the first capacitor in pipeline 12 and thus together with sense steaming
Vapour electric capacity in the first half of annular flow path 34 and/or impedance.Lower beam electrode 30 He
The plate each functioning as the second capacitor in pipeline 12 and thus sensing lead in annular flow
The electric capacity of the vapour mixture in the lower half on road 34 and/or impedance.Therefore, quality of steam meter
The electric capacity of 10 steam being obtained across annular flow path 34 and/or two measured values of impedance.
In the illustrated embodiment, electric capacity and/or impedance measurements can be passed by electric wire 36
It is delivered to signal processor 40.The electric capacity sensed and/or impedance transformation are by signal processor 40
The electric capacity of numeral and/or resistance value.Digital processing unit 42 uses digital value to calculate quality of steam
Measured value.Such as, digital processing unit 42 can be with average capacitance and/or impedance measurements to calculate
Overall quality of steam value.Average multiple electric capacity and/or resistance value are favourable, because obtaining
Meansigma methods causes ratio by the value obtained by the single measured value utilizing quality of steam meter 10 to obtain more
Accurate quality of steam value.Quality of steam value can be stored in memorizer 44, shows
On local operator interface 46, and the communication interface being transferred to monitoring/control system 50
48, monitoring/control system 50 can show this quality of steam value.In alternative embodiments,
Telemetry system or SCADA system can process electric capacity and impedance measurements to determine and/or defeated
Go out quality of steam diagnostic message.Quality of steam value can be shown as percentage ratio.The matter of 100%
Amount instruction is flow through the fluid of annular flow path 34 and is entirely steam.The quality instruction of 0% is flow through
The fluid of annular flow path 34 is entirely liquid.
Except providing the quality of steam value of entirety, two electric capacity and/or impedance measurements can also
It is illustrated separately by digital processing unit 42 or analyzes, with display for annular flow path
The quality of steam value of the first half of 34 and the steam matter of the lower half for annular flow path 34
Value.This allows user's assessment to flow through the first half of annular flow path 34 and annular flow is led to
Difference in the vapour mixture of the lower half on road 34.The electric capacity separated and/or impedance measurements
May be provided for the instruction of the reliability of the quality of steam value of entirety.Such as, if for ring-type
The measurement capacitance of the first half of flow passage 34 is less than the lower half for annular flow path 34
The measurement capacitance in portion, then this may indicate that deposition occurs the lower half at annular flow path 34
In portion or the flow rate of mixture has declined.Great difference in two measured values separated can
With warning user to regulate flow rate or line size to keep the quality of mixture.Multiple electric capacity and
/ or impedance measurements be also advantageous because multiple measured value allow redundancy.
Fig. 2 B is that the alternate embodiment of quality of steam meter 10 is along the line 2-2 in Fig. 1
Sectional view.Quality of steam meter 10 includes pipeline 12 and bar 20.Pipeline 12 includes inwall 22.
In the illustrated embodiment, pipeline 12 is electrode and can be any conduction of such as carbon steel
Material.Bar 20 includes insulating barrier 27 and the outer wall 26 with bar electrode 28 and 30.Showing
In the embodiment gone out, bar 20 can by insulating barrier 27 around conductive material make.Insulating barrier
27 can be watched insulant made by appointing of such as pottery.Bar electrode 28 and 30 can be all
Such as carbon steel or stainless any conductive material.Bar electrode 28 and 30 is separated by gap 32.
In the illustrated embodiment, bar electrode 28 and 30 is attached to outer wall 26, and gap 32 table
Show that the electricity of the outer wall 26 of exposure separates the part of bar electrode 28 and 30.This arrangement creates two
Individual sensor, or ganged condenser, a sensor is formed also by pipeline 12 and bar electrode 28
And a sensor is formed by pipeline 12 and bar electrode 30.In alternative embodiments,
Gap 32 can be filled with the insulant of such as ceramic material.Between bar 20 and pipeline 12
Space creates annular flow path 34.
Fig. 2 C is that the alternate embodiment of quality of steam meter 10 is along the line 2-2 in Fig. 1
Sectional view.Quality of steam meter 10 includes pipeline 12 ' and bar 20.Pipeline 12 ' includes having
The inwall 22 of pipeline electrode 24.In the illustrated embodiment, pipeline 12 ' can be such as to make pottery
The insulant of porcelain, and pipeline electrode 24 and can be any conductive material of such as carbon steel.
Bar 20 includes the outer wall 26 with bar electrode 28 and 30.In the illustrated embodiment, bar 20
Can be any insulant of such as pottery, and bar electrode 28 and 30 can be such as carbon
Any conductive material of steel or stainless steel.Bar electrode 28 and 30 is separated by gap 32.Showing
In the embodiment gone out, bar electrode 28 and 30 is attached to outer wall 26, and gap 32 represents sudden and violent
The electricity of the outer wall 26 of dew separates the part of bar electrode 28 and 30.This arrangement creates two biographies
Sensor, or ganged condenser, a sensor is formed also by pipeline electrode 24 and bar electrode 28
And a sensor is formed by pipeline electrode 24 and bar electrode 30.In alternative embodiments,
Gap 32 can be filled with the insulant of such as ceramic material.Bar 20 and pipeline 12 ' it
Between space create annular flow path 34.
Fig. 2 D is that the alternate embodiment of quality of steam meter 10 is along the line 2-2 in Fig. 1
Sectional view.Quality of steam meter 10 includes pipeline 12 ' and bar 20.Pipeline 12 ' includes tool
There is the inwall 22 of pipeline electrode 24.In the illustrated embodiment, pipeline 12 ' can be such as
The insulant of pottery, and pipeline electrode 24 and can be any conduction material of such as carbon steel
Material.Bar 20 includes insulating barrier 27 and the outer wall 26 with bar electrode 28 and 30.Illustrating
Embodiment in, bar 20 can by insulating barrier 27 around conductive material make.Insulating barrier
27 can be made up of any insulant of such as pottery.Bar electrode 28 and 30 can be all
Such as carbon steel or stainless any conductive material.Bar electrode 28 and 30 is separated by gap 32.
In the illustrated embodiment, bar electrode 28 and 30 is attached to outer wall 26, and gap 32 table
Show that the electricity of the outer wall 26 of exposure separates the part of bar electrode 28 and 30.This arrangement creates two
Individual sensor, or ganged condenser, a sensor is by pipeline electrode 24 and bar electrode 28 shape
Become and a sensor is formed by pipeline electrode 24 and bar electrode 30.In interchangeable enforcement
In example, gap 32 can be filled with the insulant of such as ceramic material.Bar 20 and pipeline
Space between 12 ' creates annular flow path 34.
According to another embodiment, Fig. 3 is to have longitudinally spaced bar electrode 52,54,56 and
The partial side sectional view of the quality of steam meter 10 of 58, this longitudinally spaced bar electrode is attached to
The outer wall 26 of bar 20, instead of the bar electrode 28 and 30 of the outer wall 26 being attached to bar 20.
By gap 32 electricity separately, gap 32 represents the outer wall exposed to bar electrode 52,54,56 and 58
The part of 26.In alternative embodiments, gap 32 can be filled with the exhausted of such as pottery
Edge material.This arrangement creates four sensors or ganged condenser.First sensor is by pipeline
12 and bar electrode 52 formed.Second sensor, the 3rd sensor and the 4th sensor are first
The downstream of sensor is formed by pipeline 12 and bar electrode 54,56 and 58 respectively.Can replace
In the embodiment changed, four sensors can by pipeline 12 and bar 20 such as Fig. 2 B-2D
Shown in interchangeable structure produce.
In the present embodiment, bar electrode 52 and pipeline 12 each function as the first capacitor
Plate, and thus together sensing flow through annular flow path 34 vapour mixture at ring
Electric capacity in the Part I of shape flow passage 34 and/or impedance.Bar electrode 54,56 and 58
And pipeline 12 is used as the second capacitor, the 3rd capacitor and the plate of the 4th capacitor, this is the years old
Two capacitors, the 3rd capacitor and the 4th capacitor flow through annular flow path 34 for sensing
The Part II at annular flow path 34 of steam, Part III and Part IV in
Electric capacity and/or impedance.Therefore, in the embodiment show in figure 3, quality of steam meter 10 obtains
By electric capacity and/or four measured values of impedance of the steam of annular flow path 34.Can replace
In the embodiment changed, any number of longitudinally spaced bar electrode can be attached to outside bar 20
Wall 26 is to provide electric capacity and/or any number of measured value of impedance.
Electric capacity and/or impedance measurements averagely and can be processed by electronic building brick 38, and overall
Quality of steam measured value can be shown by monitoring/control system 50, above with reference to Fig. 1 with
Described in 2A.Can embodiment shown in analysis chart 3 obtains respectively with algorithm electric capacity and/or resistance
Anti-measured value, to estimate steam when mixture flows through annular flow path 34 in downstream
Difference in thing.The electric capacity separated and/or impedance measurements may be provided for the steam matter of entirety
The instruction of the reliability of value.Such as, if being used for the Part I of annular flow path 34
The measurement capacitance in portion is less than second for annular flow path 34, the electric capacity of downstream part
Measured value, then this may indicate that and deposits when vapour mixture flows through flow passage 34 in downstream
Occur, or the flow rate of vapour mixture has declined.Separate measured value in great
Difference can warn user to regulate flow rate or line size to keep the quality of steam.Multiple electricity
Hold and/or impedance measurements is also advantageous, because multiple measured value allows redundancy.
Fig. 4 is the steam matter with bar electrode 60,62,64,66,68,70,72 and 74
The partial side sectional view of another embodiment of gauge 10, this bar electrode 60,62,64,66,
68,70,72 and 74 outer wall 26 being attached to bar 20, instead of the outer wall being attached to bar 20
The bar electrode 28 and 30 of 26.Bar electrode 62,66,70 and 74 is longitudinally spaced and is attached
The first half to outer wall 26.Bar electrode 60,64,68 and 72 is longitudinally spaced and is attached
Lower half to outer wall 26.Bar electrode 60,62,64,66,68,70,72 and 74 quilt
Separately, gap 32 represents the part of the outer wall 26 exposed to gap 32 electricity.In interchangeable reality
Executing in example, gap 32 can be filled with the insulant of such as pottery.This arrangement creates eight
Individual sensor or ganged condenser.First sensor on the first half of outer wall 26 is by pipeline
12 and bar electrode 62 formed.Second sensor, the 3rd sensor and the 4th sensor are first
The downstream of sensor is formed by pipeline 12 and bar electrode 66,70 and 74 respectively.At outer wall
The 5th sensor on the lower half of 26 is formed by pipeline 12 and bar electrode 60.6th sensing
Device, the 7th sensor and the 8th sensor pass through pipeline 12 respectively in the downstream of first sensor
Formed with bar electrode 64,68 and 72.In alternative embodiments, eight sensors are permissible
Produced by the interchangeable structure as shown in Fig. 2 B-2D of pipeline 12 and bar 20.
The plate each functioning as the first capacitor in bar electrode 62 and pipeline 12, and thus
Together sensing flow through annular flow path 34 vapour mixture at annular flow path 34
Electric capacity in the first half of Part I and/or impedance.Bar electrode 66,70 and 74 and pipe
Road 12 is used as the second capacitor, the 3rd capacitor and the plate of the 4th capacitor, this second electric capacity
Device, the 3rd capacitor and the 4th capacitor flow through the upper half of annular flow path 34 for sensing
The Part II at annular flow path 34 of the vapour mixture in portion, Part III and the 4th
Electric capacity in part and/or impedance.Bar electrode 60 and pipeline 12 each function as the 5th
The plate of capacitor, and thus together sensing flow through annular flow path 34 steam at ring
Electric capacity in the lower half of the Part I of shape flow passage 34 and/or impedance.Bar electrode 64,
68 and 72 and pipeline 12 be used as the 6th capacitor, the 7th capacitor and the 8th capacitor
Plate, the 6th capacitor, the 7th capacitor and the 8th capacitor flow through annular flow for sensing
The Part II at annular flow path 34 of the steam of the lower half of path 34, Part III
With the electric capacity in Part IV and/or impedance.Therefore, in the embodiment show in figure 3, steam
Vapour quality meter 10 obtains electric capacity and/or the resistance of the vapour mixture by annular flow path 34
Eight anti-measured values.In alternative embodiments, any number of longitudinally spaced bar electricity
Extremely can be attached to top half and the latter half of the outer wall 26 of bar 20, with provide electric capacity and
/ or any number of measured value of impedance.
Electric capacity and/or impedance measurements averagely and can be processed by electronic building brick 38, and overall
Quality of steam measured value can be shown by monitoring/control system 50, above with reference to Fig. 1 with
Described in 2A.Can embodiment shown in analysis chart 4 obtains respectively with algorithm electric capacity and/or resistance
Anti-measured value, to assess steam when mixture flows through annular flow path 34 in downstream
Difference in thing, and flow through the top half of annular flow path 34 and the steaming of the latter half
Difference in vapour mixture.The electric capacity separated and/or impedance measurements may be provided for entirety
The instruction of the reliability of quality of steam value.Such as, if for the of annular flow path 34
The measurement capacitance of the first half in a part of portion less than for annular flow path 34 second,
The measurement capacitance of the first half of downstream part, then this may indicate that along with vapour mixture under
When the first half of flow passage 34 is flow through in trip, deposition occurs, or the flow rate of vapour mixture
Decline.Separate measured value in great difference can warn user with regulation flow rate or
Line size is to keep the quality of steam.Multiple electric capacity and/or impedance measurements are also advantageous,
Because multiple measured values allow redundancy.
While the invention has been described with reference to exemplary embodiments, but those skilled in the art
Member it will be appreciated that can carry out in the case of without departing from the scope of the present invention various change and
Equivalent can substitute the element of the present invention.It addition, in the essential scope without departing from the present invention
In the case of can carry out many amendments so that concrete position or material adapt to the present invention's
Teaching.It is therefore contemplated that the present invention is not only restricted to disclosed specific embodiment, but the present invention will
Including all embodiments being intended to fall within the scope of the appended claims.
Claims (20)
1. a quality of steam meter, including:
Pipeline, described pipeline has entrance and exit；
Bar, described bar positions in the duct between entrance and exit, and is limited to bar
Annular flow path between outer wall and the inwall of pipeline；
Mixing arrangement, described mixing arrangement is in the duct between entrance and the upstream end thereof of bar；
With
Spaced apart multiple sensors, the plurality of sensor is positioned in annular flow path, institute
State each sensor in multiple sensor be structured to for sensing flow through annular flow lead to
The electric capacity of the steam on road and/or impedance.
Quality of steam meter the most according to claim 1, wherein said multiple sensors include
Multiple electrodes.
Quality of steam meter the most according to claim 1, wherein said multiple electrodes include to
A few pipeline electrode and the multiple bar electrodes at the outer wall of bar.
Quality of steam meter the most according to claim 3, wherein said pipeline includes conduction material
Material and described pipeline are pipeline electrodes.
Quality of steam meter the most according to claim 3, wherein said pipeline includes the material that insulate
Material.
Quality of steam meter the most according to claim 5, wherein said pipeline electrode is attached to
The inwall of pipeline.
Quality of steam meter the most according to claim 3, wherein said multiple bar electrode package
Include the electricity at the lower half of electrode at the first half of the outer wall being positioned at bar and the outer wall that is positioned at bar
Pole.
Quality of steam meter the most according to claim 3, wherein said multiple bar electrodes include
It is positioned at the longitudinally spaced electrode at the outer wall of bar.
Quality of steam meter the most according to claim 3, wherein said multiple bar electrode package
Under including longitudinally spaced electrode at the first half of the outer wall being positioned at bar and being positioned at the outer wall of bar
Longitudinally spaced electrode at half portion.
Quality of steam meter the most according to claim 3, wherein said bar includes insulating barrier.
11. quality of steam meters according to claim 3, at least one of which gap is separately
Electrode in the plurality of bar electrode.
12. quality of steam meters according to claim 11, at least one gap wherein said
It is filled with insulant.
13. quality of steam meters according to claim 1, further comprise circuit,
Described circuit is for based on the electric capacity sensed by each sensor in the plurality of sensor
And/or impedance measures and exports the quality of steam value of the steam flowing through annular flow path.
14. quality of steam meters according to claim 13, wherein said circuit includes supervision
Control & data acquisition system or telemetry system.
15. quality of steam meters according to claim 14, wherein said circuit includes this locality
Operator interface.
16. 1 kinds of methods measuring quality of steam, described method comprises the steps:
Steam is guided to enter in pipeline by the entrance of pipeline；
Homogenize steam；
Make steam flow through annular flow in the duct and be routed to the outlet of pipeline；
Multiple positions sensing in annular flow path flows through the steam of annular flow path
Electric capacity and/or impedance；And
Sense based on each position in the plurality of position in annular flow path
The electric capacity arrived and/or impedance, produce the quality of steam value of the steam flowing through annular flow path.
17. methods according to claim 16, wherein sense electric capacity and/or the impedance of steam
Step include, being positioned at the electrode at the inwall of pipeline and be positioned at the outer wall of bar of sensing steam
Electric capacity between multiple bar electrodes at place and/or impedance, described bar location is positioned at pipe in the duct
Between entrance and the outlet of pipeline in road.
18. methods according to claim 16, and include that contrast is being positioned at further
Electric capacity that each position in the plurality of position in annular flow path senses and/or
Impedance, to produce the instruction of the reliability of quality of steam value.
19. methods according to claim 16, wherein produce the step bag of quality of steam value
The electricity of each position in the plurality of position included averagely in being positioned at annular flow path
Hold and/or impedance.
20. methods according to claim 16, the steam step that wherein homogenizes includes making steaming
Steam flow crosses the mixing arrangement being positioned between the entrance of pipeline and annular flow path.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/643,819 | 2015-03-10 | ||
| US14/643,819 US9689823B2 (en) | 2015-03-10 | 2015-03-10 | Steam quality meter and measurement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106153681A true CN106153681A (en) | 2016-11-23 |
| CN106153681B CN106153681B (en) | 2021-01-22 |
Family
ID=54826800
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510202068.2A Active CN106153681B (en) | 2015-03-10 | 2015-04-24 | Steam quality diagnostic meter |
| CN201520256144.3U Expired - Fee Related CN204882439U (en) | 2015-03-10 | 2015-04-24 | Quality of steam meter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520256144.3U Expired - Fee Related CN204882439U (en) | 2015-03-10 | 2015-04-24 | Quality of steam meter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9689823B2 (en) |
| EP (1) | EP3268577B1 (en) |
| JP (1) | JP6781158B2 (en) |
| CN (2) | CN106153681B (en) |
| WO (1) | WO2016144469A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9689823B2 (en) * | 2015-03-10 | 2017-06-27 | Rosemount Inc. | Steam quality meter and measurement method |
| US10108161B2 (en) * | 2015-04-17 | 2018-10-23 | Agar Corporation Ltd. | System and method for controlling and measuring steam |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4854725A (en) * | 1988-06-10 | 1989-08-08 | Texaco Inc. | Multi-sensor steam quality monitoring means and method |
| US5861755A (en) * | 1995-11-06 | 1999-01-19 | The United States Of America As Represented By The Adminstrator Of National Aeronautics And Space Administration | Two-phase quality/flow meter |
| US6412351B1 (en) * | 1998-02-17 | 2002-07-02 | Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. | Method and measuring apparatus for determining the volumetric gas content |
| US20030020493A1 (en) * | 2000-03-03 | 2003-01-30 | Haase Mark Christopher | Capacitance meter |
| CN101844262A (en) * | 2009-03-03 | 2010-09-29 | 阿尔斯托姆科技有限公司 | Method that two metalworks are connected and the device that is used to implement this method |
| CN103454383A (en) * | 2013-09-05 | 2013-12-18 | 长三角(嘉兴)纳米科技产业发展研究院 | Dynamic response performance test system for gas sensor |
| CN204882439U (en) * | 2015-03-10 | 2015-12-16 | 罗斯蒙特公司 | Quality of steam meter |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149403A (en) | 1977-06-07 | 1979-04-17 | Chevron Research Company | Determining steam quality |
| US4137462A (en) | 1977-10-31 | 1979-01-30 | Westinghouse Electric Corp. | Probe for measuring steam quality |
| US4385661A (en) | 1981-01-07 | 1983-05-31 | The United States Of America As Represented By The United States Department Of Energy | Downhole steam generator with improved preheating, combustion and protection features |
| US4644479A (en) | 1984-07-31 | 1987-02-17 | Westinghouse Electric Corp. | Diagnostic apparatus |
| US4658208A (en) | 1985-06-19 | 1987-04-14 | The United States Of America As Represented By The United States Department Of Energy | Downhole steam quality measurement |
| JPS62191748A (en) * | 1986-02-18 | 1987-08-22 | Yokogawa Electric Corp | Apparatus for measuring gas-liquid mixing ratio |
| US4769593A (en) * | 1986-06-10 | 1988-09-06 | Conoco Inc. | Method and apparatus for measurement of steam quality |
| US4753106A (en) | 1986-11-07 | 1988-06-28 | Kay-Ray, Inc. | Steam quality meter |
| US4849687A (en) | 1987-11-25 | 1989-07-18 | Texaco Inc. | Steam quality monitoring means and method |
| US4849988A (en) | 1988-02-19 | 1989-07-18 | Texaco Inc. | Apparatus and method for measuring the quality of steam |
| US5383024A (en) | 1992-08-12 | 1995-01-17 | Martin Marietta Energy Systems, Inc. | Optical wet steam monitor |
| US5724254A (en) | 1996-01-18 | 1998-03-03 | Electric Power Research Institute | Apparatus and method for analyzing power plant water chemistry |
| NO310322B1 (en) * | 1999-01-11 | 2001-06-18 | Flowsys As | Painting of multiphase flow in rudder |
| US6128079A (en) | 1999-03-25 | 2000-10-03 | Electric Power Research Institute, Inc. | Fiber optic probe and system for measurement of moisture in steam turbines |
| US6587754B2 (en) | 2001-03-19 | 2003-07-01 | General Electric Company | System and methods for remote management of steam generating systems |
| US7034302B2 (en) | 2002-09-19 | 2006-04-25 | Battelle Energy Alliance, Llc | Optical steam quality measurement system and method |
| US6992494B2 (en) | 2003-03-14 | 2006-01-31 | Steris Inc. | Method and apparatus for monitoring the purity and/or quality of steam |
| US7054764B2 (en) * | 2003-09-29 | 2006-05-30 | Air Products And Chemicals, Inc. | Flow monitoring using flow control device |
| JP2007101537A (en) | 2005-09-30 | 2007-04-19 | General Electric Co <Ge> | Improved online steam flow velocity measurement device and method |
| GB0717080D0 (en) * | 2007-09-03 | 2007-10-10 | Univ Manchester | Methods and apparatus relating to fluidised beds |
| WO2010047312A1 (en) | 2008-10-21 | 2010-04-29 | 富士電機システムズ株式会社 | Online diagnostic method and online diagnostic system for geothermal generation facility |
| NO329758B1 (en) * | 2008-12-19 | 2010-12-13 | Abbon As | Multi-phase flow templates |
| US8325049B2 (en) | 2009-07-06 | 2012-12-04 | Thermo Diagnostics Company LLC | Method and system for measuring temperature and pressure in different regions to determine steam quality |
| US8984959B2 (en) | 2013-04-19 | 2015-03-24 | Dan Hutchinson | Steam quality and flow rate measurement system |
-
2015
- 2015-03-10 US US14/643,819 patent/US9689823B2/en active Active
- 2015-04-24 CN CN201510202068.2A patent/CN106153681B/en active Active
- 2015-04-24 CN CN201520256144.3U patent/CN204882439U/en not_active Expired - Fee Related
-
2016
- 2016-02-10 EP EP16762100.2A patent/EP3268577B1/en active Active
- 2016-02-10 JP JP2017542108A patent/JP6781158B2/en active Active
- 2016-02-10 WO PCT/US2016/017296 patent/WO2016144469A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4854725A (en) * | 1988-06-10 | 1989-08-08 | Texaco Inc. | Multi-sensor steam quality monitoring means and method |
| US5861755A (en) * | 1995-11-06 | 1999-01-19 | The United States Of America As Represented By The Adminstrator Of National Aeronautics And Space Administration | Two-phase quality/flow meter |
| US6412351B1 (en) * | 1998-02-17 | 2002-07-02 | Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. | Method and measuring apparatus for determining the volumetric gas content |
| US20030020493A1 (en) * | 2000-03-03 | 2003-01-30 | Haase Mark Christopher | Capacitance meter |
| CA2401849C (en) * | 2000-03-03 | 2011-08-23 | Shell Canada Limited | Capacitance meter |
| CN101844262A (en) * | 2009-03-03 | 2010-09-29 | 阿尔斯托姆科技有限公司 | Method that two metalworks are connected and the device that is used to implement this method |
| CN103454383A (en) * | 2013-09-05 | 2013-12-18 | 长三角(嘉兴)纳米科技产业发展研究院 | Dynamic response performance test system for gas sensor |
| CN204882439U (en) * | 2015-03-10 | 2015-12-16 | 罗斯蒙特公司 | Quality of steam meter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016144469A1 (en) | 2016-09-15 |
| EP3268577A4 (en) | 2018-08-22 |
| CN106153681B (en) | 2021-01-22 |
| US9689823B2 (en) | 2017-06-27 |
| CN204882439U (en) | 2015-12-16 |
| JP2018513960A (en) | 2018-05-31 |
| EP3268577A1 (en) | 2018-01-17 |
| EP3268577B1 (en) | 2020-08-12 |
| JP6781158B2 (en) | 2020-11-04 |
| US20160266060A1 (en) | 2016-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204718656U (en) | Flow measurement probe and Flow Measuring System | |
| CN202329713U (en) | System with fluid flow based on phase diagnosis and transmitter | |
| CA2360256A1 (en) | Measuring multiphase flow in a pipe | |
| CN102654410B (en) | Flow measurement based on differential pressure | |
| Jia et al. | Electrical resistance tomography sensor for highly conductive oil-water two-phase flow measurement | |
| WO2000050851A1 (en) | Flow measurement with diagnostics | |
| JPH0713575B2 (en) | Mass flow measuring device | |
| CN101929883A (en) | Method for measuring flow of conductive fluid in non-full pipe by using electromagnetic flow meter | |
| US9506800B2 (en) | System and method for measuring flow rates for individual petroleum wells in a well pad field | |
| CN106153681A (en) | Quality of steam diagnosis meter | |
| CN103185771A (en) | Liquid sample vaporizing system, diagnosis system and diagnosis program | |
| EP1163495B1 (en) | Method for measuring the flow rates of the single phases in a multiphase fluid stream and relevant apparatus | |
| CN107905780A (en) | A kind of Weighing type oil well meter of gas-liquid multiphase measurement | |
| CN105738588B (en) | Water cleaning systems and its water quality detection method and water quality detecting device | |
| EP2985597B1 (en) | Steam wetness measurement device | |
| CN202145140U (en) | Intelligent vortex street flow meter with temperature pressure compensation device on vortex street generating body | |
| US7726185B2 (en) | System and method for measuring flow in a pipeline | |
| CN110045758A (en) | A kind of constant current amount control method | |
| CN108254034A (en) | A kind of Novel oil gas moisture phase flow rate on-line metering device and its metering method | |
| KR101767618B1 (en) | Vortex flowmeter detector unit and vortex flowmeter | |
| CN112414477B (en) | Multiphase flow metering method | |
| Nagabathula | Multiphase flow metering using a pressure drop based metering device | |
| CN110006955B (en) | Detection device for detecting sand content in oil and gas pipeline | |
| EP3198237B1 (en) | A flow-rate measuring system for drilling muds and/or for multiphase mixtures | |
| CN205785364U (en) | A kind of wide-range flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |